Saw-swage



(No Model.) 7 r I B. H. THBALL 85 A. E. SUTLIPP.

I SAW SWAGE. No. 559,230. Patented Ar. .28, 1896.1

UNITE STATES PATENT OFFICE.

BURTON H. Tl-IRALL AND ALBERT E. SUTLIFF, OF TOMAHAWVK, \VISCONSIN.

SAW-SWAG E.

SPECIFICATION forming part of Letters Patent No. 559,230, dated April28, 1896. Application filed August 8, 1895. $erial No. 558,689. (Nomodel.)

To all whom, it may concern:

Be it known that we, BUR ON II. THRALL and ALBERT E. SUTLIFF,CitlZ6nS ofthe United States, residing at Tomahawk, in the county of Lincoln andState of Wisconsin, have invented certain new and useful Improvements ina Saw-Swage, of which the following is a specification.

This invention relates to a saw-swaging machine, and particularly to asaw-swage,and its novelty will be fully understood from the followingdescription and claims when taken in connection with the annexeddrawings; and the object of the invention is to provide a saw-swagingand swage-shaping machine of simple and inexpensive construction, yet ofsuch arrangement of parts as to accomplish the same and better resultsthan two separate machines as ordinarily used for this purpose.

A further object of this invention is to provide a simplified means foroperating the machine to accomplish the purposes hereinafter set forthin an approved manner.

Other objects and advantages peculiar to this machine will be revealedin the specification and claims to follow.

With these objects in view the invention resides in the construction andarrangement of parts, and essentially in the gage-spring and handlecontrolling the swage-die.

In the accompanying drawings, forming part of this application, Figure 1is a perspective view of the machine in position upon a saw. Fig. 2 is across-section on the line a; as, Fig. 1. Fig. 3 is a bottom plan view ofthe machine with the bottom of the main frame removed. Fig. 4 is aperspective view of the swage-die. Fig. 5 is a perspective view of theeccentric shaft. Fig. 6 is a perspective view of one of theclamping-blocks. Fig. 7 shows a modified form of swage-die. Fig. 8 is asection through the clamping-blocks and saw with a tooth of the latterin position to be swaged. Fig. 9 is a similar view with the toothswaged.

The same reference letters and numerals denote the same parts throughoutthe several figures of the drawings.

The main frame 1 is preferably cast in rectangular shape of skeletonform, having a longitudinal slot 2 in the base of sufficient size toaccommodate an ordinary saw 1 and a central opening 3 in the top,through which the swage die f is operated. The die is kn uckle-j ointedat 4, so that its free end will adjust itself to a saw-tooth perfectly.The frame 1 has upon its top arms 5 and 6, being at approximately thesame angle from the said frame-top as the angle or pitch of sawteeth,and each arm has a groove 7 upon the inner side, in which grooves thetongues 8 of the swage-die are operated. The importance of the angle ofthe arms relative to the saw teeth will cause the die to engage thesawteeth squarely upon the point of and in a direct line with the slantor pitch of the latter, so that the V-shaped out 10 of the die will havean equal bearing upon both the bottom and top of a tooth and shape itinto the form shown by A in Figs. 1 and 9.

The eccentric shaft 11 has an angular end 12, upon which thedie-operating handle 13 is secured; a bearing portion 14, engaging thearm 5 5 an eccentric 15, upon which the die is hung; a reduced bearing16, engaging the arm 6, and a neck 17, projecting outside of the arm 6and provided with a head 18. This neck 17 is engaged by a lock 19,slidably secured to the arm 6 by the set-screw 20, so that the forks 21of the lock engage the neck 17 to lock or secure the shaft 11 to thearms, and by sliding the lock 19 down sufficient to have the forks 21disengage the said neck the said shaft is free to be removed from thearms. This is essential, as it is so often necessary to remove the shaftand change the swagedie in accordance with the saw to be treated and forpurposes of cleaning and for packing the machine for transportation.

The gage-spring 22 for controlling the handle, and thereby regulatingthe stroke of the die 4, has one end adj ustably secured to the side ofthe frame 1 by means of the set-screw 28, and the other end has an angleprojection 24, which en gages said handle. It will be readily seen thatby simply raising or lowering the said spring the handle is controlled,and therefore the extent of rotation of the shaft 11 diminished orincreased, thereby diminishing or increasing the stroke of the die.

The frame 1 is provided with a slotted end plate 25 and a like slottedplate 26, between which plates and the sides of the frame sawclampingblocks 27 are housed. These blocks have a central cross cut-out 28,through which the die 4 is operated, and the corners 29 are grooved outor cut away, so as not to obstruct the die, and the saw contact-face ofthe blocks have teeth 30 to more firmly grasp the saw.

The blocks 27 are held in the frame 1 by means of set-screws or bolts31, passed through the end plates 25 and 26. One of the blocks isoperated to clamp the saw by means of the screws 32, and the other blockis adjusted to the saw by the set-screw 32.

One of the screws 32 has a hand-operating lever 33 and the other screw alever 34, connected to the hand-lever 33 by the bar 35, so that bymoving said hand-lever both the screws are operated alike andsimultaneously and bring the said block upon the saw squarely.

The end plate 26 has an arm 36, in the head of which is adj ustablysecured a link 37, carrying a plate 38, which rests upon the end of thesaw-teeth and to level and fix the machine in place for operation.

The die (shown in Fig. 7) is made in one piece, having a tongue 41 and across-slot 42, in which the shaft 11 is operated, and by means of saidslot the die is given a lateral as well as a vertical movement upon therotation of the said shaft.

In the operation of the machine the blocks 27 clamp and hold the saw andtooth to be swaged firmly, so that latter will not buckle, and with onlythe point of the tooth standing clear of the blocks between the cut-awaycorners 29, (see Fig. 8,) the said blocks thus acting as a clamping-anvil. Then the swagedie is forced down with its V-notch over thetooth-point and spreads or swages the latter into the form shown by A inFigs. 1 and 9.

Having thus described our invention what we claim, and desire to secureby Letters Patent, is

1. The combination in a saw-swaging machine, of the toothed blockshaving a central cross cut-out, the set-screws 32, the screws one havinga hand-lever attached and the other having a lever-and-bar connection tothe said hand-lever, whereby the blocks are moved squarely upon a saw,and the end plates provided with set-screws to keep the blocks in theframe of the machine, substantially as set forth.

2. In a saw-swaging machine, the combination with the skeleton framehaving a longitudinal slot and a top central opening, of the end plateshaving a slot to register with said fIEtlllG SlOl] one of said plateshaving an arm, the link carrying a plate to set upon the sawteeth andadj ustabl y secured in the said arm, the grooved arms 5 and 6 the diehaving tongues, the eccentric shaft, and means adjustably secured to thearm (3 for holding the said shaft in place, substantially as set forth.

3. In a saw-swaging machine the combination of the skeleton slottedframe, the slidable toothed blocks in the frame and the slotted endplates, with the arms 5 and 6 fixed to the frame upon approximately thesame angle as the saw-teeth and having a groove extending through theirlength, the knuckle-j ointed die having tongues, the shaft having a hand-lever and upon which the die is hung, and the gagesprings secured toone of the said arms and engaging the hand-lever to control the latter,substantially as set forth.

In witness whereof we hereunto set our hands in the presence of twowitnesses.

BURTON II. THRALL. ALBERT E. SUTLIFF.

Witnesses:

W. CLAUDE LUNSFORD, W. T. SIMMONS.

